Excavating machine



Aug. 25, 1925. I 1,550,938

D. J. WALSH ExcAvA'rING MACHINE Filed May 12, 19 25 IN V EN TOR.

25' BY WRNEYS.

Patented Aug. 25, 1925.

UNITED STATES PATENT OFFICE.

DANIEL JOSEPH WALSH, OF IPI'JICLSIEIELD MASSACHUSETTS.

EXCAVATING MACHINE.

Application filed May 12, 1925".

To all whom it may concern:

Be it known that I, DANIEL J. WALSH, a citizen of the United States, residing at Pittsfield, in the county of Berkshire and State of Massachusetts, have invented certain new and useful Improvements in Excavating Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to an excavating machine and particularly to the dipper structure thereof.

The object of the invention is the construction of a dipper and its co-operating parts, which will enable the operator of an excavating machine to efficiently excavate material and convey it to a given point, and then dump the material without any trouble, into a pile or a conveyance of any convenient type.

With the foregoing and other objects in View, my invention comprises certain novel combinations, constructions and arrangements of parts as will be hereinafter fully described, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims.

Figure 1 is a view in side elevation of a machine constructed in accordance with the present invention, showing the same in an elevated position, and in the act of dumping, while,

Figure 2 is a similar view of the machine, showing the mechanism in position for filling the dipper.

Figure 3 is a top plan View of the end gate of the dipper.

Figure 4 is a top plan view of another embodiment of the end gate, while Figure 5 is a view in side elevation of the same.

Figure 6 is a perspective view of another embodiment of my dipper.

Figure 7 is a sectional view taken on line 7-7, Figure 3, and looking in the direction of the arrows.

Referring to the drawings by numerals, 1 designates the ordinary derrick, and 2 is the ordinary dipper shaft. The dipper shaft is raised and lowered through the medium of the ordinary means or cable 3.

The dipper 4 comprises body 5 and an end gate 6. The body 5 is pivotally mounted, at 7, upon ears 8 that are attached or fastened to the outer end of the dipper shaft 2. Straps 9 are attached to the sides Serial No. 29,776.

of the body 5 and their inner ends are provided with a plurality of elongated slots 10, whereby the dipper 4 can be adjusted upon the dipper shaft 2 to vary the pitch of the forward end 11 with reference to its digging action. Suitable fastening means 12, such as bolts and nuts or rivets extend through the slots 10 fastening the straps 9 in the desired position upon the dipper shaft 2.

The end gate fi cglnplifiinanhadynldmthat is pivota lly nonntedwatwlilupon the sides of tlfe body, and thishody l3 is vided with 15 extending matte body 5 of the pointed on its inner face, at 16, to assist in going through snow or mud that may have been left in the dipper, as the end gate closes into position upon the body 5, Fig. 2. It will be obvious that as the end gate opens (Fig. 1) the fingers will swing within the body 5, and thereby practically cleaning the body of the major portion of the load, causing the load to efficiently dump into the receiving conveyance or on a pile that may be forming.

In the embodiment shown in Figures 4: and 5, instead of using a plurality of fingers 15, as shown in Figures 1 and 3, I have formed the finger device 17 of one piece, with reinforcing fingers 18 extending longitudinally thereof on its outer face, and these lingers are provided with the pointed edges 16 just as the fingers 15 are, shown in Figures 3 and 7 to facilitate in completely cleaning the body of the dipper, while it is being unloaded or dumped.

To operate the end gate, an apertured lug 19 is formed thereon, to which one end of cable 20 is attached, and this cable is passed over pulley 22, and then runs to a convenient place, whereby the operator may operate the cable to assist in opening or lifting the end gate, when it is desired to dump the dipper. It is immaterial whether the cable 20 is operated manually or by power, such as a motor or engine.

The latch device comprises a sliding bolt 23, to the inner end of which is attached the operating line or cable 24. An apertured tongue 25 is attached to the inner face of the rear end of the body 5, and this tongue is adapted to extend through the elongated slot 26 (Fig. 6), formed in the rear end of the end gate 6, and the lower end of the bolt 23 is adapted to project into the slot in dipp ri lfiach finger 15 is tongue 25 to hold the end gate in a closed position upon the body of the dipper until the line or cable 24 is pulled to cause the end of the bolt 23 that extends into the slot of the tongue 25 to be removed, whereupon the end gate can swing on its pivots, at 14, to an open position.

Fastened in the body 5 is an inverted substantially U-shaped cleaner blade 27 (Figures 1 and 2). This blade 27 fits into the end gate (Figure 2) when the same is closed upon the body 5, but as the end gate swings to an open position (Figure 1), the blade will cut or loosen the portion of the load that may be in the end gate during the loading, thereby facilitating in removing the load from the dipper. It is to be noted that the blade is inclined or bevelled, at 28, to permit any snow or mud to be crowded out from behind the blade as the end gate closes thereon to its closed position upon the body 5. This bevelling or inclining the outer end of the blade facilitates the efficient operation of my improved dipper.

In the embodiment shown in Figure 6, the parts are all similar to the preferred embodiment hereinbefore described, except that in this embodiment (Figure 6), the rear end is closed, at 29, with a cleaning blade 30 arranged across the upper end of the closed portion 29.

WVhile I have described the preferred embodiments of my invention, and have illustrated the same in the accompanying drawings, certain minor changes or alterations may appear to one skilled in the art to which this invention relates, during the extensive manufacture of the same, and I, therefore, reserve the right to make such alterations or changes as shall fairly fall within the scope of the a pended claims,

that? claim is:

1. In a machine of the class described, the combination with a dipper shaft, of a dipper body pivotally attached, at its forward end upon said dipper shaft, straps extending across said body and provided at their inner ends with slots, means in some of said slots and attached to said dipper shaft for adjustably mounting the body upon said dipper shaft, an end gate pivotally mounted upon said body, and means for operating said end gate to open the same.

2. In a machine of the class described, the combination with a dipper shaft, of a dipper body pivotally mounted at its forward end upon said dipper shaft, a pair of straps extending across said body and fastened thereto, said straps provided at one end with a plurality of aligned slots, said slotted end positioned against the dipper shaft, fastening means in some of said slots and said dipper shaft for adjustably attaching the straps to the dipper shaft, and a movably mounted end gate on said dipper body.

3. In a machine of the class described, the combination of a dipper body, an end gate pivotally mounted on said body, and a cleaner blade attached to the body and adapted to extend into said end gate for cleaning the same when the dipper is dumped.

4. In a machine of the class described, the combination of a dipper body, an end gate pivotally mounted on said dipper body, and an inverted substantially U-shaped cleaner blade attached to said body and extending into said end gate.

5. In a machine of the class described, the combination of a dipper body, an end gate pivotally mounted upon said dipper body, and a cleaner blade attached to the body and extending into said end gate, said cleaner blade provided with an outer inclined end.

6. In a machine of the class described, the combination of a dipper body, a pivotally mounted end gate on said dipper body, a cleaner blade attached at one end to said body and projecting outwardly therefrom into said end gate, and the outer end of said cleaner blade being inclined for facilitating the removal of foreign substance from between its end and the end gate as Itaheil end gate closes upon the blade and the 7. In a machine of the class described, the combination of a dipper body, an end gate pivotally mounted on said dipper body, and means fastened to the body and extending into and around the inner face of the end gate for cleaning the end gate of a load, when said end gate is moved to an open position.

8. In a machine of the class described, the combination of a dipper body, an end gate movably mounted on said dipper body, and means for cloanlng the end gate of a load as the end gate 1s moved to an unloading position.

9. In a machine of the class described, the combination of a dipper body, and an end gate pivotally mounted upon said dipper body, said end gate provided with a plurality of fingers extending into said body and each finger provided upon one face with a longitudinally extending cutting edge.

10. In a machine of the class described, the combination of a dipper body, an end gate pivotally mounted upon said dipper body, said end gate provided with a plarality of fingers extending into said dipper body, and each finger provided on one face with cutting means.

11. In a machine of the class described, the combination of a dipper body, an end gate pivotally mounted upon said dipper body, and means carried by the end gate and extending into and across the entire dipper when the end gate is in full open i it new me an i aw My" o I position for positively removing the load per body and across the entire depth of from the dipper. said dipper body when the end gate is Wide- 12. In a machine of the class described, open, for forcing a load in said dipper body 10 the combination of a dipper body, an end to be entirely removed therefrom. 5 gate movably mounted upon said dipper In testimony whereof I hereunto afiix my body, and load-removing-means on said end signature. gate extending the entire Width of the dip- DANIEL JOSEPH WALSH. 

